Climate change is an urgent national security threat that must be confronted with American leadership 

Climate change ranks among the most pressing and consequential security threats of our time. Americans and their government must treat it that way—and confront it head on, through leadership abroad and resolve at home—if we are to meet the challenge. That is why Trump’s denials of climate change and basic science are so dangerous.

Progressives must mainstream the argument that climate change is a national security threat that Trump’s denial dangerously exacerbates. We must seize the mantle and lead with an affirmative vision that lays the foundation for bold action at home and renewed American leadership abroad going forward.